Growli

Overwintering guide

How to overwinter purple mountain saxifrage

Verdict
Stays outside
When
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
Hardiness
Purple Mountain Saxifrage is hardy to roughly USDA zone 1 — winter lows around -51°C. That means it can stay outside all winter in most temperate gardens.

Winter watering

No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.

The mistake that kills purple mountain saxifrage in winter

Cutting purple mountain saxifrage hard back in autumn "to tidy up". That removes the growth that shelters the crown, and on some plants removes next season's flower buds entirely.

More purple mountain saxifrage care

Overwintering purple mountain saxifrage — FAQ

Does purple mountain saxifrage need to come indoors for winter?

Purple Mountain Saxifrage is hardy to roughly USDA zone 1 — winter lows around -51°C. That means it can stay outside all winter in most temperate gardens. Purple Mountain Saxifrage is properly hardy and overwinters outside without fuss. Tidy away anything dead or diseased, apply a mulch over the crown to steady soil temperatures, and otherwise leave it alone — many hardy plants actually need a cold period to flower and grow well the following year. Save hard pruning for the right season rather than doing it in autumn.

When should I move purple mountain saxifrage for winter?

Tidy and mulch in late autumn; leave the plant undisturbed until spring.

How often should I water purple mountain saxifrage in winter?

No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.

What kills purple mountain saxifrage over winter?

Cutting purple mountain saxifrage hard back in autumn "to tidy up". That removes the growth that shelters the crown, and on some plants removes next season's flower buds entirely.